package com.wjq.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wjq.reggie.common.R;
import com.wjq.reggie.entity.Employee;
import com.wjq.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @ProjectName: reggie_take_out
 * @Package: com.wjq.reggie.controller
 * @ClassName: EmployeeController
 * @Author: 10980
 * @Description: ${description}
 * @Date: 2022/8/18 18:47
 * @Version: 1.0
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){
        /**
         * 1.将用户提交的密码password进行md5加密
         * 2.根据页面提交的用户名username查询数据库
         * 3.如果没有查询到则返回登录失败结果
         * 4.密码比对，如果不一致则返回登录失败结果
         * 5.查看员工状态，如果为已禁用状态，则返回员工禁用结果
         * 6.登录成功，将员工id存入session并返回登录成功结果
         */
        //1.将用户提交的密码password进行md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<Employee>();
        //根据用户名进行等值查询
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        //数据库employee表，username字段添加了索引，索引类型unique唯一索引。所以可以调用getone方法
        Employee emp = employeeService.getOne(queryWrapper);
        //3.如果没有查询到则返回登录失败结果
        if (emp == null){
            return R.error("登录失败");
        }
        //4.密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }
        //5.查看员工状态，如果为已禁用状态，则返回员工禁用结果
        if (emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
        //6.登录成功，将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录的员工id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初识密码123456，需要md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //设置创建和更新时间，获取当前系统时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //设置创建人,从session域中拿当前登录用户
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);
        //存入数据库
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.error("page = {}, pageSize = {}, name = {}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加一个过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByAsc(Employee::getUpdateTime);

        //执行查询,传进去之后并不用返回，因为pageInfo传进page后page内部会将查出来的数据进行封装
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request ,@RequestBody Employee employee){
        log.info(employee.toString());//测试employee属性是否封装好了
        //输出当前线程id
        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);
//        Long empId = (Long)request.getSession().getAttribute("employee");
//        employee.setUpdateUser(empId);
//        employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     *根据id查询员工信息
     * @param id
     * @return
     * @PathVariable为路径变量
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息。。。");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("未查询到对应的员工信息");
    }
}
